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- Patented Feb. 14, 1933 UNITED STATES PATENT OFFICE JOHN Em WILLIAM GBEV'E, OI CHEHNITZ, GERMANY, ASSIGNOB 1'0 mm mm:

ASTRAWEBKE AII'IENGESELLSC HAIT, OF CHEHNI'I'Z, GERMANY annma m carcumrme menmn Application filed September 25, 1928, Serial No. 306,175, and in Germany April 84, 1988.

Adding and calculating machines with an automatic printing mechanism are frequently used for the purpose of making statements and accounts in columns on sheets, the single figures being written in horizontal rows next to one another. In such work, the amounts and figures of the same kind are always .set in the same column so that vertical columns are thereby formed and'as many column counting mechanisms are mounted on the paper carriage or on a separate carriage controlled by the paper carriage as there are vertical columns in order to be able to obtain at once the single column totals during the process of calculation. In a known machine of this type, the counting mechanisms are spaced apartand it is therefore difiicult to accommodate as many counting mechanisms as are required for calculating the wages of lar e factories, mines etc. or for statistical wor In another machine, the column counting mechanisms are not spaced apart but they formas is also knowna continuous row which is not divided by spaces. However, the counting wheels are not divided into any desired plurality of column counting mech: anisms of varying width or capacity.

The object of the'present invention is to obviate these drawbacks and to create a machine with an automatic total printing mechanism wherein thesheets. and forms inserted can be completely filled up and the sums of all columns transversely and vertically as well as the total sum of these sums are obtained at once during the operation whether the work be done in a few wide or many narrow columns.

The new machine comprises in the constructional form as shown one or more principal or total countlng mechanisms and a set of driving members which coo rates with a larger set of counting whee s mounted on the paper carriage. The set of counting wheels contains as many single digits as can be printed next to one another on the largest sheet which the machine can take. The driving members may be rendered operative and inoperative either manually or automatically during the operation of the machine by shifting the set of counting wheels, the lateral connection with the movement of which is in correlation to the shifting of the form to be written on. The row of counting wheels may be divided by the tabulat'or into any desired plurality of groups of any desired number of digits. Moreover, safety and locking means are provided in tabulator for preventing an improper working of themachlne.

The accompanying drawings show by way v of example three constructions of the mao0 chine according to the invention. In these drawings:

Figure 1 shows the general arrangement of the machine in longitudinal section.

Figure-2 is a partial view of the control 55 device for the accumulators.

Figures 3 to 6 show safety and locking devices and v Figures 7 to 10 details.

Figures 11 to 16 show a second construction, namely Figure 11 is a longitudinal section through the machine,

Figure 12 shows on an enlarged scale the rlving members and the tens carrying device Figures 13 and 14 show the change-over and control device for the driving members. Figure 15 shows the arrangement of the driving members, looking from the top Figure 16 is an example of the work Figures 17 'to 20 show the third construction, that is r Figure 17 is a section through the two carriages Figure 18 is a detail view Figures 19 and 20 are two examples of the work.

The invention will be described in the following with reference to a ten key adding machine of the known Astra type, such as disclosed in Patent No. 1,707,303 issued April 2, 1929, in which the keys 0 to 9 are mounted in the front part of the machine on a fixed spindle 10 and held by springs 11 in'the position shown in Figure 1. The lower ends of the keys are provided with push rods 12 which are guided in a small bracket 13 in one vertical line, and on the keys being depressed, move the setting parts 14 of a 100 by means of their sition shown in the drewings,'so that they con melts their movement only when on the mechine being operated the rod or bar 27 is moved into its upper position 27. The type hers are provided with toothed rocks 28, 28 for driving or operating the counting gears 30, 8% and 31,31 whichere the principal or main accumulators. 'lhe ports 32, 38, or end 85 belong to the feed'devices of these counting goers.

The setting piece carriege .15 is mounted between rods or bars 36, 3? in e transversely edjusteble menner on rollers 88, 39 and its leterel movement is controlled in the known menner by on escapementnot shown in the drewing,-on one oi the figure keys being struck, v 1

The scculators 30, 30' end 31, 31' ere sets of reversible wheels for addition end suhtrsction ectiomend ore rotetebly mounted on pivot pins 40,41 supported by arms 42, 48 which in their turn are mounted on fixed spindles it, also so that, they may be turned. In the position shown in Fig. 1

the uccumuletors 3030-' and 31-31 ore set for additions because the upper wheels 30 end'3l are in mesh with their opereting reeks 28 end 29. on moving the accumulators eround their pivots 40 end 41 so that the lower wheels 30' end 31 will be in mesh with the rocks, the accumulators will be set for subtraction. This method ofchanging from addition to subtraction and vice verse is well known and therefore a further description is not thought necessary, Owing to the tension of the springs-not shown in the drewings-the counting ears 30 end 31 olweys hove the tendency to ecomedisengegcd from the rocks 28, 29 endure brought to the workmg position by moons of pins 46, e? oil-the arms 42, 48' with the assistance of a com disc 48, Figure 2.

The control of the counting gears is efiected during the runnin of the machine, by the main sheilt 4:8 to w rich is keyed e notched or toothed disc 59 (Figure l) which is hinged by moons oil o spring controlled connection 51, 52 53 end 54 ton lever 55 which is rigid ly secured to e spindle or hit 56. 'Jihe' indies 4:8- end 56 ere mounted in the bed pots of the machine.

The spindle 56 curries afurther lever 57 (llie 2) with o pivoted double noting pewl 58 which, owing to the action of e, spring 58,

always has the tendency to occupy the cen- 60 is provided with two pins 62, 63 with which co-operates the pawl 58, owing to which the part 61 is turned forwards or becerds during the movement of the machine.

A lever 64 pivoted about the pin 66, also co-operetes with the pins 62, 63 by means of on upper recess which in Figure 2 surrounds the pin 62 end of n bottom projection 65, end therefore on the machine being operated, the lever es takes port in the movement of the pert 61 owing to which n lever srm 68 engaging with the lever 8%, end the square spindle 87, are turned,

The squere spindle 87 is mounted on round ends between the leterel frames of the muchine, end curries it further lever 68 which surrounds by its upper bifurcated end the pin 69 of u bell crsnk lever 70, so that on the spindle 67 being operated, the lever 70 is else turned shout its fined fulcrum 21.

A red 7 2 is secured by means of e shoulder screw 73 to u leterel arm of a. lever 74: which is secured to as square spindle 75 mounted on e turned-on pin between the leterel frames of the mechine (Figures 2 end 3) The slide 48 provided with earns 48' and 48", is ruided by two slots on set screws 76, I? in w "ch ere fastened in arm 7t, end the lower port of the slide is formed into n fork with which engeges e pin 7 8 of the bell crenk lever 79. The letter is secured to e rotstebly mounted square spindle 88 end connected with its lower erm by moons of e rod 81 to e throwing-in genr lever 82.

In the osition shown in Figure 2, the

throwing-in geer lever-82 is in such it posi-' Ila lid

position marked 2, raises the rod t8 still more,

so that the pin 48 slides oil trom the upper cum oi the rod whilst the pin it? still remeins on the straight surface of the lower com:

The counting gear 30, 30' has been thus disengeged, whilst the counting geer 31, 31' remoins in engagement. The return of the lever 82 to the zero position or position oi rest, produces a. pulling down of the slide 28 to at point in'which the two pins d7 end 48 ere outoif reach or the leterel cums, so that both counting gears are brought out of the working position by spring notion V shown in the drawings.

. the reverse manner as The working of the parts described is as follows:

The digits'of the items are struck successively on the keys, and in that way the corresponding setting parts 14 in the setting piece carriage are moved forward. The machine is thereupon operated by'a hand lever or by a power drive, owing to which the shafts 49 and 56 are given a movement in the direction of the arrow (Figure 4) so that the pawl 58 (Fig. 2) of the arm 57 presses with its upper notch against the pin 62 of the part 61, and turns the latter about its centre of rotation 60. The lever 64 which surrounds the pin 62 presses back therefore the lever arms 66 and 68 of the spindle 67 owing to which the spread toggle oint 70, 72, collapses under the pressure of the pins 46, 47. This pressure is exerted by the springs which engage with the counting gear frames 42 and 43 and always have the tendency to disengage the counting gears from their driving racks.

The arm 74 with the cam slides 48, 48' and 48" is therefore moved in the direction of the arrow, and the counting gear 30, 30' which was in working position, is thereby brought out of engagement with its driving racks.

The rod 27 (Figure 1) is now raised as example into the dotted position 27', and the type bars 16 therefore obey the pull of their springs 26 until they strike with their rods 17 against the advanced setting parts 14, owing to which the types 83 are placed correspondingly to the digits set by the keys.

The striking device 84 is now released, the hammers 85 of which are projected against the types set, and make animpression. The main spindles 49 and 56 have now completed their forward movement, and are brought back to the initial position by springs not During that time, the lower notch of the pawl 58 of the lever 57 seizes the pin 63 and forces the rotatable part 61 back to its position shown in Figure 2, owing to which the remaining parts are also brought to their position of rest by means of the rod 64 as well as of the levers 66, 68 and of the toggle joint. The toggle joint 70, 72 is thus stretched again, and the counting gear 30. 30' by means of its pin 46 is brought into engagement with its rack 28 by means of the upper cam 48' of the slide 48. The rod 27 is now again depressed, and it drives the raised type bars back again, owing to which the counting wheels which are now in engagement, are given a rotation corresponding to the number set. When printing the total it is necessary that the accumulator 30-30 remain in engagement with its driving racks during the forward. stroke of the machine and is put out of e gagementduring the'back stroke.- I

The control of the arm 74 takes place in by operating a total key or lever the steering lever 64 is lowered, so that its upper fork releases the pin 62, and its bottom projection comes to rest upon pin 63. On the machine being operated, the pawl 58 again turns the part 61 in the direction of the arrow, and the projection 65 drops behind the pin 63, so that during the return of the arm 57 to the position of rest and the turning of the part 61 into the osition shown in- Figure 2, the rod 64 bends t e toggle joint and 72 by means of the pin 63 and of the lever arms 66 and 68, so that the counting gear 30, 31 is disengaged from its driving racks by beginning of the return stroke of the machine.

In order to take a sub-total it is necessary that the counting gears 30-30 should be left in engagement during the forward and backward stroke of the machine. This is done by depressing a sub-totals key which causes the rod 64 to be held in a neutral position in which it is not affected by the pins 62 and 63. This working is generally known and is here briefly mentioned merely for the sake of greater clearness.

In order to enable column work to be done advantageously on the form, it is necessary that itshould be possible to print in any desired way on the whole width of the sheet,

without the number of counting gears becoming inadequate on that account. For that reason instead of providin single counting gears for the different headings or columns, according to this invention, large set of counting wheels single ones of which will.

The wheel set comprises count-ing wheels 91, 92 arranged in reversible pairs one wheel above the other, these wheels are mounted on thin spindles in a casing 93 (Figures 1, 7 and 8). The distance of the single wheel pairs from one another is, according to the invention, the same as the lateral distance apart of the type bars 16. In order to avoid any bending through of the thin spindles of the counting wheels, in the frame 93 are provided thin partition walls 94. In the present case they are at such a distance from one another that in each case ten counting wheels are situated between them. The frame 93 a suflicientl is provide may be operated at is made of precision casting namely with notches or recesses for the guidin of projections 95, 96. The lower part 0 the wall 94 is held in a slot of a bolt 97, the turned stem or shank of which projects throu h a hole in the wall of the frame 93 and w ich 7 is secured a ainst falling out b a wire 96. The bolts 9 are secured to t e partition walls b a pin or a rivet 99.

- In, at way, the walls 94 are afforded a firm hold in the frame 93 so that they not only form a stiffening of the thin spindles, but also represent a means for fixing the lateral distance and for reducing the lateral friction of the counting wheels. The number of the countin large, accor ing to the width of the forms for which the machine is built, and there may be 150 to' 200 wheels arranged next to one another in a row. Small diilerences in the' thickness of the single wheels would be already of importance for the total length, which is avoided by the walls 94.. Without the latter, also in the oblique position of the machine, the lateral thrust, of the whole of the wheels would be taken up only by a single point and therefore would be too strong. llhis disadvantage is also avoided by the partitions 9 1-. V

The frame 98 is connected by means of lateral walls 100, 101 Figure 1) to a frame 87 which has angle-s aped track surfaces 88, 89 which are adjustable on rollers of a rail 90. The frame 87 carries a platen 80, the length of which corresponds to the largest form.

in order to enable the upper or the lower counting wheel to be brought into the work ing position, owing to which an addition or a subtraction is performed, the frame 93 is mounted in the lateral walls 100, 101 so that it can turn about the point 102 (Figure 1). lhe changing-over or reversing is efiected by means of the cam discs 105, 106'which are arranged at the point 107 at both sides of the carriage and have a downwardly projectin arm 104 which carries a crossbar 103 which thus extends throughout the whole width of the carriage. Above and below the centre of rotation 102 for the counting gear frame 93, are provided rollers 108, 109 in the lateral walls of the frame...

In the position shown in Figure 4, the upper cam 105 presses against the roller 108,

owing to which the counting gear is held in the position for addition. The cross bar 103 is held by the bifurcated end of a rod 111, the other end'of which is connected to a setting lever 110. When this lever is moved from the position marked A intothat marked S the levers 10 1 will be turned, and there- 4 fore the lower cams 106 of these two lateral levers press against the rollers 109, whilst the upper cams 105 release the rollers 108 .so that the counting wheels are brought into the opposite position which corresponds to subtraction. The changing over from addition to subtraction or conversely could be of course effected, instead of by hand, also automatically by the working of the machine.

For the driving of the counting wheels 91, 92 a set of toothed racks 112 (Fig. 1) is provided, which, according to the invention is connected to the type bars 16. i It contains therefore as many racks as there are type bars in the machine, 1n the present case thirteen.

The racks are hinged to rearward arms 113 of the type bars, and 'provided at the top "with a slot in which is arrangedva comb-like wheels is in some cases very,

guide bar 116 which is secured between two small side frames 117, 118 (Figure 3). The two side frames are mounted so as to be rotatable at a fixed point on their hubs 114 and arranged so far apart that the set of driving elements 112 as well as the tens feed pawls 120 are situated between them. The lateral distance of the racks 112 is the same as that of the type bars.

@n the counting wheel carriage 93 is provideda guide bar 201 which forms a support for the lateral frames 117, 118 so that an exact engagement is ensured.

In Figure 1, the driving elements 112 are shown in engagement with the counting wheels 91, and a control device is provided which, on the machine being operated and during the forward movement of the same, disengages the racks, whilst during the return movement of the machine the racks again come into engagement, and turn the counting wheels in accordance with the single digits of the number struck on the keys.

At the bottom end of the racks 112 is provided an elongated hole 123 through which they are guided by means of a set screw on the arm, and a spring 115 has the tendency always to pull down the rack. With the machine at rest as shown in Fig. 1 and in case a carrying of tens did not take place during the last operation of the machine, the racks g 112 are held one tooth higher by means of pawls are turned, owing to which the device 121 locking the tens advance pawls to the locking pawls 119, is released, so that a fiirther movement or the projection 122 to one division takes place. The tens advance pawls 120 as wellas the locking pawls 119 are mounted'on spindles 126, 127 between the small side frames 117, 118and therefore take part in the turning movement of these frames during the process of engaging with,or being disengaged from, the racks 112.

The side frames 11?, 118 rotatably mounted on their hubs 114: on lined bolts, are always pulled by a'spring 128 against a pawl 129 (Figures 2 and 3} which is rotatablmounted at'the point 130 in the lever arm 4- and always held in the position shown in the draw ings by a spring. it will be readily understood that on the counting gears 30, 80 and 31, 31 or on the same, being operated, the side frames 11?, 118 participate in their movement, whether it be a normal calculating or total and subtotal operation. in other words, whenever levers 7'? swing back and forth side frames 11? and 118 will he likewise moved. In the same way as in the case of single calculations, the counting gears 30, 31 are brought in and out of engagement with their driving steering elements for the newness racks 28, 29, th racks 112 also are brought wheels 91 or 92.

thirteen driving elements 112 (Fi in and out of en 1 out with the counting When the work is to be done only with the counting gears 30, 30', 31, 31' or with one of the same, a spindle 150 is turned by throwing over a hand lever 203 (Figure 3) with the assistance of the rod 204 and lever 205, so that a lever arm 151 raises the pawl 129 until it releases the s uare pin 132 in the side framell'? owing to which the two side frames are able to yield to the action of the spring 128 until they strike a fixed stop 133 in which position the racks 112 are out of engagement with their countin gears.

In the position shown in Figure 1, the driving elements 112 are in engagement with the counting wheels 91, and it is assumed that the column is situated in about the centre of the form. As already stated, there are re 9), and therefore only thirteen of the w eels 91 are in engagement with the racks, whilst the other wheels of the set, to the right and to the left of the working ones, are prevented from turning by pawls 134. These pawls are mounted on a spindle 135 of the counting wheel frame 93 and controlled by the action of springs 136 which have the tendency always to pull the pawls into the intervals between the teetho-f the wheels 91. The pawls 134 of the counting wheels which happen to be in engagement with the driving elements 112, are held out of enga ement with the counting wheels by means 0? their arms 13?, so that the latter can be turned at given moments, namely by two bell crank levers 138 which are secured to a square spindle which is mounted on turned-on pins between the side frames of the machine. Between the horizontal arms of the bell crank levers is mounted a cross bar 139 which extends transversely over thirteen pawls. The lower arm of the bell crank levers 138 surrounds with its bifurcated end a pin 140 of the side frames 117, 118 so that on the elements 112 being thrown out of gear, the cross bar 139 will be lowered, and the raised pawls 134 lock the released counting wheels.

The counting wheel carriage canbe operated by hand as well as automatically during the working of the machine, and for this purpose between the lateral wails 100, 101 of the carriage is provided a rotatably arranged cross bar 141 which carries adjustable riders or slides 142 which can be set to the single headings or columns of the form to be printed upon (Figures 1,3, 4, 6 and 10). The cross bar 141 is provided with teeth, the pitch of which corresponds to the distance between the type bars or the counting wheels 90, 91 so that by setting the riders 142, the counting wheels are at once allotted to the single headings or columns of the form.

Aparticularly important advantage of the of the arrow in Figure .view, and the riders 142 strike with their the riders 142 for the single headings o the form 218, at once brings the required countin wheels into the operative position.

11 Figure 9 the heading or column A is in the working position, its width is such that seven-figure numbers can be printed in it. Consequently, of the thirteen elements 112, only the seven on the left hand side hecome 0 erative. The next column B is smaller, an only five-figure numbers can be printed in it, so that only the first five type ars reckoning from the left in Figure 9, can be used.

The capacity of the numbers which can taken up in a single column, dependsapart from the width of the column on the form itself-on the number of places of the machine, which in this case amounts to thirteen.

The counting wheel carria e is always pulled by a. spring to the lef t, seen from the front of the machine,'or in the direction 6, which is a rear projections 143 against a stop lever 144 which 1s rotatably mounted at a fixed point of the machine and operated by the mechanism of the machine latter.

A lever 205 (Figures 9 and 10) mounted at the same point, is raised during the forward the lever 144 so that the latter releases the projection 143. On a rotatably mounted s uare spindle 206 (Figure 10) is mounted a. ever 207 which, during the forward stroke of the machine, is turned in the direction of the arrow. Its awl 208 which is controlled by the action 0% a spring 209, engages over the pin 210 of a bell crank lever 212 pivoted about a fixed point 211, owing to which the horizontal arm of the latter lever raises the turned-over lug 213 of the lever 205, and therefore the latter. Owing to spring action, the counting wheel carriage springs to the extent of one division in the direction of the arrow during the forward stroke of the machine, and the tabulating elements described are brought back to the position of rest during the return movement of the machine.

The toothed bar 141 with a handle 145 of which it may be turned so that the stop 143 of the rider which happens to be in a gagement with the pawl 144 is moved down out of the path of the pawl, so that the carriage can be moved by hand at will to any desired column. A spring 146 brings the lever 145 back to the position shown in the drawings, as soon as it is released, so that the pro ection 143 of the rider 142 situated in the column in question, strikes the looking lever 144. g

uring the movement of the stroke of the machine and then strikes is provided at one end (Figures 3 and 4) by means In the position of rest of the machine, the

racks 112 are'in engagement with the counting wheels 91 or 92, and according to the invention, an arrangementis made by which, when the counting wheel carriage is moved by hand, these parts are first disengaged from one another. To that end, to each of the two outer ends of the bar 141 is secured a downwardly projecting agm 147 (Figures 3 and 4) which carries a bar 148 of suitable crosssection which extends over the whole length of the carria e. The lower rounded ofi portion of this ar co-operates with a surface of a bell crank lever 149, 151, secured to .a square spindle 150 which is rotatably sup; ported fixed hearings on its turned en he upward arm 151 of the said bell crank lever is provided with a cam surface which, on the aim 149 being depressed, raises the pawl 129 by means of its in 152, so that this Y piawl releases the square olt 132 of the side since 117, 118, and the latter can obey the v pull of the spring 128, so that the racks 112 as well as the tens carrying pawls 120 are moved out of reach of the counting wheels 91 and 92. The counting wheel carriage can therefore he moved to and fro at will by hand without coming in contact with the said parts. Y

When the handle 145 is released, the parts 147 and 151 are brought back again to the position shown in Figure 3 by the springs 146, 15a.

Pawl129 will then rest upon stud 132 and drops behind it by the pawl of its spring 131 as soon, as lever 4 will be swung 1n the direction of the arrow, which takes place during the forward stroke of the next normal sition, so that the carriage cannot be moved I operation of the machine.

It is essential that in the position of rest of the machine, in which the driving racks 112 are in engagement with the counting wheels 91 or 92, the counting wheel carriage shall be locked against any accidental move-. ment. To that end, according to the invention is provided a safety device which is constituted by a lever'155 (Figures 3-5) which, in the position of rest of the machine, surrounds b a notch the pin 143 of the rider 142 whic happens to be in the working po to either side. On the handle 145 being operated, the pin 143 is disengaged from this safety device, and the parts 112 and 91, 92 are brou ht out of engagement, as already describe so that it is possible-tomove the counting wheel carriage at will without any obstruction.

During the normal working with the ma chine, the springing forward of the carriage from column .to column takes place automatically during the movement of the machine owing to the operation of the tabulating pawl 144. Itis therefore necessary to cancel the locking 153 during this movfment.

' This safety joint constitu For that reason, the part 155 with two arms 1 156, 157 .is secured to a square spindle. 158

invention, it is advisable to throw the driv-' ing racks 112 out of gear during the performance of a calculatin operation, immediatelyon the beginning 0 the forward stroke of the machine. This. is done by moving back .the frames 117, 118, and it will be readily understood that in that way the double lever 162 is turned, and in its turn turns, by means of its pin 160, the spindle 158 in such a manner that the safety device 155 is raised sothat it releases the pin 143. The pawl 144 is now also raised by the mechanism of the machine, so that this pawl is brought out of the path of the, pin 143. This pawl however immediatel stop 143 o the carriage moving under the action of the spring pull, now meets it.

descends agai n and the next After the forward stroke of the machine,

in this position of the carriage the printing of the number setinthe machine takes place immediately at the beginning of the return stroke of the machine, and at the same time the frames 117, 118 are brought back again by the counting geagcontrol device to the pobrought into enga ementwith the counting wheels, so that t e locking device again becomes operative. it may happen that during the forward stroke of the machine, at the time when the safety device 155 is released, the carria e is intentionally or accidentally prevented I om springin forward, owing to which the number struc on the keys is not brought in the column provided for it. In order to avoid this, a further safety device ,is provided sition shown, that i to say, the-driving ele-I vments 112 are agai which stops the movement ot the machine whenever-the counting gearv carriage is not in its correct position.

device is constituted by a roof shaped part 164 (Figures 4 and 6). which i is influenced by the ends of the pin 143; The part 164 is held by two arms 165, 166 which are secured to a rotatably mounted squarespindle 167 on which is provided an arm-168 which co-operates with the raised head of a set screw 169, which is secured to one end of a double lever 170. The latter is rotatably mounted at a fixed point 171, and theset screw 169 is surrounded by an elongated hole of a second lever 17 2 which is also mounted in a rotatable manner or pivoted at the point .174 to a lon lever am 173. A spring has the ten epeg al'ways'to keep the toggle by the levers 170,172 in 

